| FSD (N = 463) | Non-FSD (N = 891) | P value | |
| Age† | 35 (30.41) | 35 (30.40) | 0.13 |
| BMI | 0.004** | ||
| <18.5 | 22 (32.4) | 46 (67.6) | |
| 18.5 - 24.9 | 353 (35.5) | 640 (64.5) | |
| 25 - 29.9 | 69 (26.7) | 189 (73.3) | |
| ≥30 | 19 (54.3) | 16 (45.7) | |
| Education |
| 0.66 | |
| middle school or lower | 27 (35.1) | 50 (64.9) | |
| high school or technical | 80 (31.7) | 172 (68.3) | |
| college | 356 (34.7) | 669 (65.3) | |
| Family monthly income | 0.006** | ||
| <900 USD | 173 (39.4) | 266 (60.6) |
|
| ≥900 USD | 290 (31.7) | 625 (68.3) |
|
| Marital status | 0.17 | ||
| married | 454 (34.0) | 883 (66.0) |
|
| unmarried | 9 (52.9) | 8 (47.1) |
|
| Relationship with partner | <0.001*** | ||
| negative | 144 (56.5) | 111 (43.5) | |
| positive | 314 (28.7) | 779 (71.3) | |
| Current depression | <0.001*** | ||
| no | 355 (31.7) | 766 (68.3) | |
| yes | 108 (46.8) | 123 (53.2) | |
| Chronic medical disease |
| 0.001** | |
| no | 419 (33.1) | 848 (66.9) | |
| yes | 44 (50.6) | 43 (49.4) | |
| Mode of delivery | 0.79 | ||
| vaginal delivery | 220 (34.6) | 415 (65.4) | |
| cesarean section | 243 (33.8) | 476 (66.2) |